OFDM Relay Cognitive Radio Multiple Antennas Resource Allocation Full Duplex Spectrum Sensing Synchronization Spectrum Sharing Interference Cancellation Channel Estimation Feedback Heterogeneous Networks Bi-directional Energy Harvesting Stochastic Geometry HetNet relay networks FBMC Equalization channel capacity TVWS CDMA interference in-band full-duplex system Duplex MIMO Ultra Low Power C-V2V 5G Reliability SC-FDMA interference suppression D-TDD CLI indoor positioning reinforcement learning RSRP weighting - Computation offloading smart factory Cell-free multi-access edge computing estimated position overlapping —Device-to-device (D2D) estimated position updating mMIMO control overhead hybrid NR positioning Femtocell Rat-dependent positioning frame structure Zigbee body area networks channel estimation error Handoff CoMP User grouping power uncertainty ultra-dense small cell network mode selection antenna arrays 5G mobile communication UFMC resource block management inter user interference WVAN health care partial overlap GFDM Dynamic TDD Multi-user Receiver Number of training blocks Uplink SCMA system V2X Vehicular communication cross-link interference LTE-TDD FS-NOMA Location-based user fairness Mode 3 QR Factorization Metaheuristics P-NOMA non-orthogonal multiple access dynamic HetNet spectrum partitioning and 5G networks. massive connectivity non-orthogonal multiple access (NOMA) overloading DQN OTDOA distributed mode Communication range resource selection maximum likelihood method Resource sharing Power allocation packet delay
Status : Presented 
Date : 2007-09 
Title : An Equalization Technique Based on QR Decomposition for DSTBC-OFDM Systems with Distributed Carrier Frequency Offsets 
Authors : Jaehwan Kim, Hyungjoon Song, Sungsoo Park and Daesik Hong 
Conference : IEEE International Symposium on Personal, Indoor and Mobile Radio Communications 
Abstract : In the distributed space-time block coded (DSTBC) orthogonal frequency division multiplexing (OFDM) system (DSTBC-OFDM), there may exist distributed carrier frequency offsets (CFOs) by sharing the transmission antennas belonging to different nodes. In this paper, the signal model of the DSTBC-OFDM system with distributed CFOs is presented. Then we propose a new equalization technique via the modification of the QR decomposition (MQRD) in order to eliminate ICI and ISI which are caused by CFOs. The proposed MQRD scheme guarantees transmit diversity gain. Several kinds of equalization techniques are introduced and compared in terms of bit error rate (BER) performance and transmit diversity order. Simulation results show that the proposed method outperforms conventional equalization techniques and achieves equal transmit diversity order with perfectly synchronized DSTBC-OFDM system. 
URL : http://ieeexplore.ieee.org/xpl/articleDe...cy+Offsets 
Download : http://mirinae.yonsei.ac.kr/?module=file...efcefd7ade 
Jaehwan Kim; Hyungjoon Song; Sungsoo Park; Cheolwoo You; YoungHoon Kwun; Daesik Hong; , "An Equalization Technique based on QR Decomposition for DSTBC-OFDM Systems with Distributed Carrier Frequency Offsets," Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on , vol., no., pp.1-5, 3-7 Sept. 2007
doi: 10.1109/PIMRC.2007.4394612
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4394612&isnumber=4393983
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» [IEEE PIMRC] Jaehwan Kim, Hyungjoon Song, Sungsoo Park and Daesik Hong, "An Equalization Technique Based on QR Decomposition for DSTBC-OFDM Systems with Distributed Carrier Frequency Offsets", PIMRC 2007, Sep. 2007 file Presented  2007-09